Valve lifter



May 12, 1925.

E. L. cox

VALVE LIFTER Filed Oct. 12, 1922 2 Sh set 1 E. L. COX

VALVE LIFTER Filed 0ct.,12, 1922 2 Sheets-Sheet 2 Patented May 12, 1925.

UNITED STATES EVERETT L, COX, O'F FORT SCOTT, KANSAS.

' VALVE LIFTER.

Application filed October 12, 1922. Serial No. 594,077.

To all whom it may concern:

Be it known that I, EVERETT L. Cox, a citizen of the United States, residing at Fort Scott, in the county of Bourbon and State of Kansas, have invented certain new and useful Improvements in a Valve Lifter; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The object of the invention is to provide a simple and efiicient tool whereby the operation of removing the valves of motors may be facilitated, and more particularly a means whereby the valve actuating spring may be contracted to permit of the removal of the pin or key from the valve stem so as to release the valve for removal, and incidentally to provide a device for the purpose indicated which is capable of a wide range of adjustment to suit valves of different constructions and having stems of widely different lengths; and with these objects in view the invention consists in a construction, combination and relation of parts of which a preferred embodiment is shown in the drawing wherein:

Figure 1 is a side View, and

Figure 2 is an end view of an apparatus embodying the invention applied in the operative position to a valve stem,

Figure 3 is a side view of the device in the reversed position,

Figure 4; is a sectional view of the arm carried by the bracket and fitted with the removable jaw,

Figure 5 is a detail view of the bracket, and

Figures 6 and 7 are respectively detail sectional views on the lines 66 and 77 of Figure 1.

The apparatus consists of a bracket 10 having a front bar 11 and parallel arched side bars 12 carrying spacing blocks 13, with an interval between the spacing blocks and the front bar to form upper and lower guides for a rack bar 13 constituting a lifting bar. This lifting bar is reversibly fitted in the guide provided for its reception and is actuable by an operating lever 14: having a segmental toothed head 15 for engagement with the rack teeth 16 of the lifting bar, said lever being fulcrumed upon a transverse pivot pin 17 spanning the interval between the side bars 12; also mounted in the space vided with forwardly extended arms 22 and 23 respectively carrying means for engaging a valve spring and the valve to the end that by the adjustment of the lifting bar to draw said means together the spring may be contracted to release the key or pin of the valve stem. By reversing the position of the lifting bar as indicated by a comparison of Figures 1 and 3, the-interval between said valve and spring engaging'means may be varied to suit different lengths of valve stems.

In the construction illustrated the arm 23 of the bracket is formed as an extension of the front bar 11 thereof, and fitted upon said arms are jaws 2i and 25 which are re spectively provided with a claw 26 and a threaded pin 27 the latter being adapted for adjustment to terminally engage the valve which is to be removed and the former being adapted to straddle the valve stem so as to engage the washer at the free end of the valve spring so that when the arms 22 and 23 are drawn toward each'other by the adjustment of the lifting bar the spring is contracted to release the stem holding key or pin.

The said jaws are provided with sleeves 28 removably fitted upon the arms 22 and 23 to provide for folding the device into a com pact form when not in use and also to permit of adjustment of the jaws relative to the plane of the bracket and lifting bar to suit different constructions of motors, pins 29 being provided for selective engagement with openings 30 in said sleeves and arms 22 and 23 to secure the jaws in their adjusted positions.

It will thus be understood that when not in use the tool if carried on the car for emergency use may be folded into compact form for storage in the tool kit and the parts may be relatively arranged to fit any of the standard constructions of valve mechanisms used on cars of the conventional type and after the adjustment of the lifting bar and the locking of the operating lever by means of one of the dogs it will be seen that both hands of the operator are free to be employed in connection with the other operations incident to the removal of the valve.

The claw 26 is, as shown in Figures 1, 2 and 3, provided with an arcuate guide and guard 26*. This element is adapted to materially assist the operator in applying the claw 26 below the lower end of the spring, and it is also adapted to, when the valve lifter is in applied position, contact with the spring and thereby prevent the claw 26 from moving forwardly or laterally with relation to the spring.

Having thus described the invention, what I claim is A valve lifter comprising a guide bracket including a pair of U-shaped side members spaced apart and having their bight portions vertically disposed, a bar positioned between said members and secured thereto adjacent the free ends thereof, said bar having its lower end outturned to project forwardly of the bracket, a lifting bar slidably mounted in the rear of said bar and between the members of said bracket, said lifting bar being provided with rack teeth on its rear edge and having its lower end outturned to project forwardly of the bracket, spacing blocks secured to and between said side members on the side of the lifting bar opposite to the first mentioned bar, opposed members detachably secured to the outturned ends of said bars for respectively engaging a valve and the remote end of the valve actuating spring, a lever pivoted between the bight portions of the side members of the bracket and having a segmental gear head engaging said rack teeth, said lever being located between the spacing blocks adapted to move the sliding lifting bar to compress and release a valve actuating spring, and pawls mounted on said bracket and adapted to engage a tooth of said segmental head and hold the lever in desired position in the rear of said spacing blocks and between said side members.

In testimony whereof I aflix my signature in presence of two witnesses.

EVERETT L; COX.

Witnesses:

W. L. WOODARD, H. F; CHAPMAN. 

